Difficult Sudoku-by5 Logic Puzzles (Vol 1)
Chapter 4: Sixteen Difficult (DiffLev 10) Sudoku-by5 Puzzles (numbers 17-32)
- Step-by-step instructions for solving Puzzle 17, (221/369) Diff: 10/99.9998.4672
- Step-by-step instructions for solving Puzzle 18, (229/369) Diff: 10/99.9995.9234
- Step-by-step instructions for solving Puzzle 19, (232/369) Diff: 10/99.9999.9786
- Step-by-step instructions for solving Puzzle 20, (234/369) Diff: 10/99.9999.6941
- Step-by-step instructions for solving Puzzle 21, (235/369) Diff: 10/99.9999.9976
- Step-by-step instructions for solving Puzzle 22, (235/369) Diff: 10/99.9999.9572
- Step-by-step instructions for solving Puzzle 23, (238/369) Diff: 10/99.9999.9662
- Step-by-step instructions for solving Puzzle 24, (238/369) Diff: 10/99.9999.8862
- Step-by-step instructions for solving Puzzle 25, (239/369) Diff: 10/99.9999.9944
- Step-by-step instructions for solving Puzzle 26, (239/369) Diff: 10/99.9999.9834
- Step-by-step instructions for solving Puzzle 27, (242/369) Diff: 10/99.9999.9996
- Step-by-step instructions for solving Puzzle 28, (242/369) Diff: 10/99.9999.9992
- Step-by-step instructions for solving Puzzle 29, (250/369) Diff: 10/99.9999.9994
- Step-by-step instructions for solving Puzzle 30, (251/369) Diff: 10/99.9999.9992
- Step-by-step instructions for solving Puzzle 31, (252/369) Diff: 10/99.9999.9993
- Step-by-step instructions for solving Puzzle 32, (255/369) Diff: 10/99.9999.9993